A monitor stand to prevent head tilting

Abstract

This utility model discloses an anti-tilt monitor stand, relating to the field of monitor accessory technology. Specifically, it includes a base, a swing arm, and a tilting arm. The swing arm includes a housing and a slotted frame. The housing is movably fastened to the top of the slotted frame. An adjustable elastic anti-tilt mechanism is installed between the housing and the slotted frame via a connecting component. The front end of the adjustable elastic anti-tilt mechanism is hinged to the inner side of the front end of the housing, while the rear end is hinged to the end of the slotted frame via the connecting component. This utility model utilizes a retractable guide positioning component to guide and position a spring, constructing an elastic reaction mechanism to counteract the load of the monitor stand. Simultaneously, it continuously utilizes the spring's elasticity to counteract the monitor stand's tendency to tilt. This effectively avoids spring misalignment and jamming, achieving smooth angle adjustment operation, preventing wear and abnormal noise during swing arm adjustment, and enabling stable, immediate stopping operation of the monitor stand.

Description

Technical Field

[0001] This utility model relates to the technical field of monitor accessories, specifically to a monitor stand that prevents users from looking down. Background Technology

[0002] Computerized office work has become commonplace, encompassing various industries. To cater to consumers' needs for monitor angle, height, or orientation, a variety of monitor arms of different models and specifications have emerged on the market. However, the upper swing arm of traditional monitor arms currently has certain shortcomings in terms of load adjustment and stability. Under load, it is prone to "head-down" (i.e., the position slides down and the angle tilts forward) due to its own weight, vibration, and other factors, making it impossible to maintain the set hovering posture stably for a long time. Moreover, in the existing swing arm structure design of monitor arms, the spring is prone to jamming due to uneven load, which can easily accelerate the wear of the swing arm body or the inner wall of the shell, and abnormal noises or jamming may occur during angle adjustment, which has a significant impact on the normal service life of the monitor arm.

[0003] Therefore, we propose a monitor stand with an anti-head-down design. Utility Model Content

[0004] This invention provides a monitor stand that prevents users from looking down, in order to solve the problems mentioned in the background art.

[0005] To achieve the above-mentioned objectives, this utility model adopts the following technical solution:

[0006] This utility model discloses an anti-head-down display bracket, specifically including a base, a swing arm, and a tilting arm. The swing arm includes a housing and a slot frame, and the housing is movably fastened to the top of the slot frame, allowing the housing to move on the top of the slot frame. The two ends of the housing are respectively hinged to the second and third hinge points at the ends of the base and the swing arm. The two ends of the slot frame are respectively hinged to the first and fourth hinge points at the ends of the base and the swing arm. The housing and slot frame in the base, swing arm, and swing arm are connected by the first, second, third, and fourth hinge points to form a movable quadrilateral frame structure, and the frame structure formed by the first, second, third, and fourth hinge points is preferably a parallelogram design.

[0007] Furthermore, an adjustable elastic anti-pitch mechanism is installed between the housing and the slot frame via a connecting assembly. The front end of the adjustable elastic anti-pitch mechanism is hinged to the inner side of the front end of the housing, while the rear end is hinged to the end of the slot frame via the connecting assembly. Slots for mounting the adjustable elastic anti-pitch mechanism are fixed on the two side walls of the inner side of the housing near the swing arm end. The adjustable elastic anti-pitch mechanism is mounted using the swing arm's own structure as a carrier, completely separating it from the swing part and the base. This avoids interference from the base and swing part on the movement of the adjustable elastic anti-pitch mechanism when the swing arm is adjusting its pitch angle, thus limiting the range of pitch angle adjustment of the swing arm.

[0008] Furthermore, in order to construct an elastic reaction mechanism inside the swing arm to counteract the load of the monitor bracket and resist the tendency of the monitor bracket to "droop," and to achieve stable hovering operation of the monitor bracket that can stop and start immediately, mounting holes for installing connecting components are provided on both sides of the slot frame near the base. The connecting components include a hinge arm and a U-shaped push seat. The bottom end of the hinge arm is hinged to the slot frame through the cooperation of a second pin shaft with the mounting hole. A roller is horizontally fixed to the top end of the hinge arm. The two ends of the roller are in rolling engagement with the front of the push seat. The push seat is fixedly installed on the inner side of the housing near the base by bolts.

[0009] Furthermore, the adjustable elastic anti-lowering mechanism includes a guide positioning component and a spring, with the spring sleeved on the outside of the guide positioning component; the guide positioning component includes a sleeve and an adjusting rod movably inserted into the front end of the sleeve; a U-shaped seat is fixed to the tail end of the sleeve, and the U-shaped seat is hinged to the middle of the hinge arm via a first pin shaft; the adjusting rod includes a lead screw thread portion and an insert portion and a round rod portion integrally formed at both ends of the lead screw thread portion; the guide positioning component also includes a top block sleeved on the outside of the lead screw thread portion and forming a lead screw drive between the lead screw thread portions, with the top block slidingly engaged with the inner walls of both sides of the housing; the two ends of the spring respectively abut against the top block and the U-shaped seat, and a cylindrical sleeve is laterally rotatably fitted onto the outside of the round rod portion, with the sleeve being detachably assembled in a slot seat inside the housing via a fixing bracket.

[0010] When adjusting the monitor height using this monitor stand, the swing arm moves up and down. The angle between the base and the swing arm remains constant, while the angle between the housing and the slot within the swing arm changes. As the swing arm gradually changes from an upward tilt angle towards a horizontal angle, the angles between the housing and the slot, and between the base and the swing arm, gradually become more perpendicular. Simultaneously, the housing and the slot will move from an interleaved state towards opposite directions. During this process, the adjustable elastic anti-tilt mechanism, with its front end locked in the slot and its rear end connected to the slot via a hinged arm, maintains a constant angle between the hinged arm and the slot. The hinge points between the adjustable elastic anti-tilt mechanism and the hinge points between the adjustable elastic anti-tilt mechanism and the housing form a triangular structure. When the angle between the housing and the bracket changes, the height between them changes synchronously. In order to adapt to this change, when the top of the hinge arm is restricted from rotating towards the base by the front push seat, it can only do so by compressing the distance between the sleeve and the U-shaped seat. During this process, the spring is compressed. The more the swing arm moves in the horizontal direction, the tighter the spring is compressed. In this way, the elastic force of the spring is used to counteract the load of the monitor stand, so as to continuously resist the tendency of the monitor stand to "tilt".

[0011] Furthermore, to facilitate consumers in adjusting the elastic tension of the spring according to their actual needs, so as to adapt to the load generated by the monitor bracket at different angles and when mounting monitors of different weights, an internal hexagonal groove is provided at the end of the round rod, and an avoidance slot is provided in the middle of the swing arm near the housing. Consumers can directly turn the adjustment rod from the avoidance slot at the end of the swing arm without disassembling the housing.

[0012] Furthermore, in order to make the operation of adjusting the position of the top block by rotating the adjustment rod smoother, an annular retaining ring is integrally formed between the threaded part and the round rod part of the adjustment rod, and a thrust bearing for bearing the spring thrust is fitted on the round rod part between the retaining ring and the sleeve.

[0013] Furthermore, a display mounting base is mounted on one end of the swing arm via a one-way damping bearing seat.

[0014] The advantages of this utility model over the prior art are as follows:

[0015] This invention uses the swing arm's own structure as a carrier to install an adjustable elastic anti-tilt mechanism, completely separating the adjustable elastic anti-tilt mechanism from the swinging part and the base. On the one hand, this avoids interference from the base and swinging part on the movement of the adjustable elastic anti-tilt mechanism when the swing arm is adjusting its pitch angle, thus preventing the limitation of the swing arm's pitch angle adjustment range. On the other hand, this design integrates the adjustable elastic anti-tilt mechanism with the swing arm structure, and utilizes the structural design of the adjustable elastic anti-tilt mechanism to simplify the assembly of the monitor stand. Furthermore, the entire adjustable elastic anti-tilt mechanism utilizes a retractable guide... The positioning component guides and positions the spring and creates an elastic reaction mechanism to counteract the load of the monitor stand. At the same time, it continuously uses the spring force to counteract the tendency of the monitor stand to "droop," effectively preventing spring jamming and achieving smooth angle adjustment. This prevents wear and noise during arm adjustment and allows for stable suspension operation of the monitor stand. In addition, the thrust bearing in the guide and positioning component bears the thrust generated by the spring, making it smoother and more comfortable for users to adjust the position of the top block with tools, resulting in a better user experience. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 This is a three-dimensional structural diagram of an anti-head-down monitor stand according to the present invention;

[0018] Figure 2 This is a cross-sectional structural diagram of an anti-head-down monitor stand according to the present invention;

[0019] Figure 3 This is a schematic diagram of the disassembled structure of an anti-head-down monitor stand according to this utility model. Figure 1 ;

[0020] Figure 4 This is a schematic diagram of the disassembled structure of an anti-head-down monitor stand according to this utility model. Figure 2 ;

[0021] Figure 5 This is a structural diagram of the disassembled connecting component and the adjustable elastic anti-head-down mechanism in this utility model.

[0022] Reference numerals: 1. Base; 101. First hinge point; 102. Second hinge point; 2. Swing arm; 201. Housing; 202. Slot frame; 203. Assembly hole; 204. Slot seat; 3. Swing arm; 301. Clearance slot; 302. Third hinge point; 303. Fourth hinge point; 4. One-way damping bearing seat; 5. Display mounting base; 6. Connecting assembly; 601. Hinge arm; 602. Push seat; 603. Roller; 604. First pin shaft; 605. Second pin shaft; 7. Adjustable elastic anti-lowering mechanism; 701. Sleeve; 702. Adjusting rod; 721. Insertion part; 722. Lead screw thread part; 723. Round rod part; 703. Sleeve head; 704. Thrust bearing; 705. Fixing frame; 706. Top block; 707. Spring; 708. U-shaped seat. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. The following description of at least one exemplary embodiment is illustrative in nature and is not intended to limit the present utility model or its application or use in any way. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as exemplary rather than limiting. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0026] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0027] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0028] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0029] Example

[0030] To address the common issue of monitor stands on the market "tilting down" (i.e., sliding down and tilting forward) under load due to their own weight and vibration, making it impossible to maintain a stable hovering posture for extended periods, we propose a monitor stand with an anti-tilting design. This design utilizes a retractable guide and positioning component to guide and position spring 707, creating an elastic reaction mechanism to counteract the monitor stand's load. Simultaneously, the elasticity of spring 707 continuously counteracts the monitor stand's tendency to "tilt down," effectively preventing spring 707 from becoming stuck due to uneven load, achieving smooth angle adjustment, preventing wear and noise during arm adjustment, and enabling stable, immediate stopping and repositioning of the monitor stand. The specific solution is as follows:

[0031] like Figures 1-4 As shown, this embodiment provides an anti-head-down display bracket, specifically including a base 1, a swing arm 2, and a tilting arm 3. One end of the tilting arm 3 is fitted with a display mounting base 5 via a one-way damping bearing seat 4. The swing arm 2 includes a housing 201 and a slot frame 202, with the housing 201 movably fastened to the top of the slot frame 202, allowing the housing 201 to move on top of the slot frame 202. The two ends of the housing 201 are respectively hinged to the base 1 and the second hinge point 102 and the third hinge point 30 at the ends of the tilting arm 3. 2. The two ends of the slot frame 202 are respectively hinged to the first hinge point 101 and the fourth hinge point 303 at the ends of the base 1 and the swing arm 3. The base 1, the swing arm 3 and the shell 201 in the swing arm 2 and the slot frame 202 are connected by the first hinge point 101, the second hinge point 102, the third hinge point 302 and the fourth hinge point 303 to form a movable quadrilateral frame structure. The frame structure formed by the first, second, third and fourth hinge points 303 is preferably a parallelogram design.

[0032] like Figures 2-4 As shown, in this embodiment, an adjustable elastic anti-head-down mechanism 7 is installed between the housing 201 and the slot frame 202 via a connecting assembly 6. The front end of the adjustable elastic anti-head-down mechanism 7 is hinged to the inner side of the front end of the housing 201, while the tail end of the adjustable elastic anti-head-down mechanism 7 is hinged to the end of the slot frame 202 via the connecting assembly 6. The two side walls of the inner side of the housing 201 near the swing arm 3 are fixed with slot seats 204 for installing the adjustable elastic anti-head-down mechanism 7. The adjustable elastic anti-head-down mechanism 7 is installed using the structure of the swing arm 2 itself as a carrier, which completely separates the adjustable elastic anti-head-down mechanism 7 from the swing part and the base 1, so as to avoid the base 1 and the swing part interfering with the movement of the adjustable elastic anti-head-down mechanism 7 when the swing arm 2 is adjusting the pitch angle, thereby limiting the range of pitch angle adjustment of the swing arm 2.

[0033] In this embodiment, in order to construct an elastic reaction mechanism inside the swing arm 2 to counteract the load of the monitor stand and resist the tendency of the monitor stand to "droop," and to achieve stable hovering operation of the monitor stand that can stop immediately, mounting holes 203 for installing the connecting components 6 are also provided on both sides of the slot frame 202 near the base 1. Figures 3-5 As shown, the connecting assembly 6 includes a hinged arm 601 and a U-shaped pusher seat 602. The bottom end of the hinged arm 601 is hinged to the slot frame 202 through the cooperation of the second pin shaft 605 with the mounting hole 203. A roller 603 is horizontally fixed to the top end of the hinged arm 601. The two ends of the roller 603 are in rolling contact with the front of the pusher seat 602. The pusher seat 602 is fixedly installed on the inner side of the housing 201 and near the base 1 by bolts.

[0034] In this embodiment, as Figures 3-5As shown, the adjustable elastic anti-lowering mechanism 7 includes a guide positioning assembly and a spring 707, with the spring 707 sleeved on the outside of the guide positioning assembly. The guide positioning assembly includes a sleeve 701 and an adjusting rod 702 movably inserted into the front end of the sleeve 701. A U-shaped seat 708 is fixed to the tail end of the sleeve 701, and the U-shaped seat 708 is hinged to the middle of the hinge arm 601 via a first pin shaft 604. The adjusting rod 702 includes a lead screw threaded portion 722 and insertion portions 7 integrally formed at both ends of the lead screw threaded portion 722. The guide and positioning assembly also includes a top block 706 that is sleeved on the outside of the screw thread 722 and forms a screw drive between the screw thread 722. The top block 706 slides against the inner walls of the housing 201 on both sides. The two ends of the spring 707 abut against the top block 706 and the U-shaped seat 708 respectively. A cylindrical sleeve 703 is rotatably fitted on the outside of the round rod 723. The sleeve 703 is detachably assembled in the slot seat 204 inside the housing 201 through the fixing bracket 705.

[0035] When adjusting the height of the monitor using the monitor stand, the swing arm 3 moves up and down, the angle between the base 1 and the swing arm 3 remains unchanged, and the angle between the housing 201 and the slot frame 202 in the swing arm 2 changes. As the swing arm 2 gradually changes from an upward tilt angle to a horizontal angle, the angle between the housing 201 and the slot frame 202 and the base 1 and the swing arm 3 gradually tends to be perpendicular. The housing 201 and the slot frame 202 will also move from an interleaved state to opposite directions. During this process, the adjustable elastic anti-tilt mechanism 7 is engaged in the slot seat 204 at its front end, and the tail end of the adjustable elastic anti-tilt mechanism 7 is connected to the slot frame 202 through the hinge arm 601, so that the hinge arm 601 and the slot frame... The hinge point between 202 and the adjustable elastic anti-tilt mechanism 7, and the hinge point between the adjustable elastic anti-tilt mechanism 7 and the housing 201, form a triangular structure. When the angle between the housing 201 and the slot frame 202 changes, the height between them changes synchronously. In order to adapt to this change, when the top of the hinge arm 601 is restricted from rotating towards the base 1 by the front push seat 602, it can only do so by compressing the distance between the sleeve head 703 and the U-shaped seat 708. During this process, the spring 707 is compressed. The more the swing arm 3 moves in the horizontal direction, the tighter the spring 707 is compressed. In this way, the elastic force of the spring 707 is used to counteract the load of the monitor bracket, so as to continuously resist the tendency of the monitor bracket to "tilt".

[0036] In this embodiment, in order to facilitate consumers to adjust the elastic tension of the spring 707 according to actual needs, so as to adapt to the load generated by the monitor bracket at different angles and when a monitor of different weights is mounted, an internal hexagonal groove is provided at the end of the round rod 723, and an avoidance slot 301 is provided in the middle of the swing arm 3 near the end of the housing 201. Consumers can directly turn the adjusting rod 702 from the avoidance slot 301 at the end of the swing arm 3 without disassembling the housing 201.

[0037] In this embodiment, in order to make the operation of adjusting the position of the top block 706 by rotating the adjusting rod 702 smoother, an annular retaining ring is integrally formed between the lead screw thread portion 722 and the round rod portion 723 in the adjusting rod 702, and a thrust bearing 704 for bearing the thrust of the spring 707 is sleeved on the round rod portion 723 between the retaining ring and the sleeve head 703.

[0038] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A monitor stand for preventing head tilting, comprising a base (1), a swing arm (2), and a tilting arm (3), characterized in that: The swing arm (2) includes a housing (201) and a slot frame (202). The housing (201) is movably fastened to the top of the slot frame (202). An adjustable elastic anti-head-down mechanism (7) is installed between the housing (201) and the slot frame (202) through a connecting component (6). The front end of the adjustable elastic anti-head-down mechanism (7) is hinged to the inner side of the front end of the housing (201), while the tail end of the adjustable elastic anti-head-down mechanism (7) is hinged to the end of the slot frame (202) through the connecting component (6). The two ends of the housing (201) are respectively hinged to the second hinge point (102) and the third hinge point (302) at the end of the base (1) and the swing arm (3), and the two ends of the slot frame (202) are respectively hinged to the first hinge point (101) and the fourth hinge point (303) at the end of the base (1) and the swing arm (3).

2. The anti-head-down monitor stand according to claim 1, characterized in that: The inner side of the housing (201) near the swing arm (3) is fixed with a slot (204) for installing an adjustable elastic anti-lowering mechanism (7); The slot frame (202) has mounting holes (203) on both sides near the base (1) for installing the connecting component (6).

3. The anti-head-down monitor stand according to claim 1, characterized in that: The connecting assembly (6) includes a hinge arm (601) and a U-shaped push seat (602). The bottom end of the hinge arm (601) is hinged to the slot frame (202) through the cooperation of the second pin shaft (605) with the mounting hole (203). A roller (603) is horizontally fixed at the top end of the articulated arm (601); the two ends of the roller (603) are in rolling engagement with the front of the front push seat (602); The front pusher (602) is fixedly installed on the inner side of the housing (201) and near the base (1) by bolts.

4. The anti-head-down monitor stand according to claim 1, characterized in that: The adjustable elastic anti-lowering mechanism (7) includes a guide positioning component and a spring (707), wherein the spring (707) is sleeved on the outside of the guide positioning component; The guide positioning assembly includes a sleeve (701) and an adjusting rod (702) that is movably inserted into the front end of the sleeve (701); a U-shaped seat (708) is fixed at the tail end of the sleeve (701), and the U-shaped seat (708) is hinged to the middle of the hinge arm (601) by a first pin shaft (604).

5. The anti-head-down monitor stand according to claim 4, characterized in that: The adjusting rod (702) includes a lead screw threaded part (722) and an insertion part (721) and a round rod part (723) integrally formed at both ends of the lead screw threaded part (722). The end of the round rod part (723) is provided with an internal hexagonal groove. The outer side of the round rod (723) is laterally rotatably fitted with a cylindrical sleeve (703), which is detachably assembled in the slot seat (204) inside the housing (201) by a fixing bracket (705).

6. The anti-head-down monitor stand according to claim 5, characterized in that: The guide positioning assembly also includes a top block (706) sleeved on the outside of the lead screw thread (722) and forming a lead screw drive between the lead screw thread (722). The top block (706) slides against the inner walls of the housing (201) on both sides. The two ends of the spring (707) abut against the top block (706) and the U-shaped seat (708) respectively.

7. A monitor stand for preventing head tilting as described in claim 6, characterized in that: An annular retaining ring is integrally formed between the lead screw thread portion (722) and the round rod portion (723) of the adjusting rod (702), and a thrust bearing (704) is fitted on the round rod portion (723) between the retaining ring and the sleeve head (703).

8. The anti-head-down monitor stand according to claim 1, characterized in that: The swing arm (3) has an avoidance slot (301) in the middle of one end near the housing (201).

9. The anti-head-down monitor stand according to claim 1, characterized in that: One end of the swing arm (3) is fitted with a display mounting base (5) via a one-way damping bearing seat (4).

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